后备的

The main woks include the design of charger, control and main circuit of inverse change, framing the circuit and calculating the related parameters.

本文首先介绍了小灵通机站长延时不间断电源的构成和后备式不间断电源的现状及其发展的趋势，并对小灵通UPS的要求及其技术指标进行了综述。

The succeeders to the mineral resources in western China are of big potential to be developed after the mineral resources in central and eastern China are mined up, which can meet the demands of economic development.

西部矿产资源接替区作为潜在的矿产资源接替基地，是我国目前中东部矿产资源主要产区资源耗竭后的西部后备接替资源，是满足我国经济建设和可持续发展对重要矿产资源需求的保障。

To solve th is problem, the inter-block reverse overcurrent relay is proposed in this paper , which makes more substations′ connection possible.

指出了当链接站点过多时，后备过流保护按照阶梯式原则整定的时限存在超出主变电所允许的最大时限的问题；提出了相互闭锁反向过流继电器新原理。

His father's pizza shop delivered to the New Jersey base, which is 25 miles from Philadelphia and is used primarily to train reservists for duty in Iraq.

他的父亲的比萨饼店送交到新泽西基地，距离费城是25英里和主要被使用在伊拉克培训后备役军人的工作。

In China,the land resources that can be used to produce material for liquid fuels are:plantation field of sorghum and maize that can be substituted by sweet sorghum,winter idle field in South China,sloping landthat is needed to convert into forest, oil plant forestry land,and in-support plantation land.

我国能够用来种植能源作物和能源植物的土地资源主要有甜高粱替代高粱和部分玉米的耕地、南方冬闲田、退耕还林的土地、油料林地、和后备土地。

It is misunderstood that the backup impedance protection is high-ly sensitive to the inter-phase fault,inter-turn fault and single phase-to-ground fault at star winding of the windings of generator and transformer.

有些人误认为，后备阻抗保护对发电机定子绕组和变压器各侧绕组的相间、匝间短路、YN侧的单相接地短路有很高的灵敏度。

The scheme use quadrilateral directional impedance characteristics and R-L algorithm to calculate the impedance of the faulted phase. The results of simulation show that the performance of distance protection proposed is reliable, and can be used as backup protection for six-phase transmission line.

阻抗继电器采用四边形方向阻抗特性和R-L模型法进行故障相阻抗的测量，大量的仿真测试表明，该距离保护方案性能可靠，可以作为六相输电线路的后备保护。

Marine Corps Junior ROTC students from Ramona High School in Riverside, Calif., place a wreath honoring fallen service members during the inaugural Inland Empire Armed Forces Day event at NSWC Corona.

在海军水面战中心Corona分部，该分部指挥官Jay Kadowaki上校、海军塞尔镇武器基地指挥官Terry Auberry上校以及来自加州Riverside的Ramona的初级后备军官训练团成员向阵亡军人敬献花圈，这一天是为内陆帝国军队创建日的一次活动。

Their intentions determine the behavior of participating rural endowment insurance and their behavior at present will influence the development of rural endowment insurance in the future.

青年农民是农村社会养老保险持续发展的后备动力，其养老意愿决定投保行为，而现在的投保行为又影响将来农村社会养老保险的发展。

Therefore, at penetrations of up to 10 per cent in the electricity grid, wind energy requires very little additional back-up resources beyond those already in place within the electricity system.

因此，在穿透比自身能量多于百分之十的电力网时，在本身电力系统所有能量的基础上，再稍多一些额外的后备资源即可。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失